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Colin Patrick McCabe
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[HDFS-6482] Use block ID-based block layout on datanodes
...Right now blocks are placed into directories that are split into many subdirectories when capacity is reached. Instead we can use a block's ID to determine the path it should go in. This eli...
, 2016-01-15, 23:07
[HDFS-6634] inotify in HDFS
...Design a mechanism for applications like search engines to access the HDFS edit stream....
, 2015-12-10, 09:09
[HDFS-6853] MiniDFSCluster.isClusterUp() should not check if null NameNodes are up
...Suppose we have a two-NN cluster and then shut down one of the NN's (NN0). When we try to restart the other NN (NN1), we wait for isClusterUp() to return true, but this will never happen bec...
, 2015-11-23, 01:14
[HDFS-6939] Support path-based filtering of inotify events
...Users should be able to specify that they only want events involving particular paths....
, 2015-08-24, 18:17
[HDFS-6981] Fix DN upgrade with layout version change
...Post HDFS-6800, we can encounter the following scenario: We start with DN software version -55 and initiate a rolling upgrade to version -56 We delete some blocks, and they are moved to tras...
, 2014-12-01, 03:11
[HDFS-6865] Byte array native checksumming on client side (HDFS changes)
...Refactor FSOutputSummer to buffer data and use the native checksum calculation functionality introduced in HADOOP-10975....
, 2014-08-29, 17:37
[HDFS-6777] Supporting consistent edit log reads when in-progress edit log segments are included
...For inotify, we want to be able to read transactions from in-progress edit log segments so we can serve transactions to listeners soon after they are committed. This JIRA works toward ensuri...
, 2014-08-28, 23:22
[HDFS-6561] Byte array native checksumming on client side (Hadoop changes)
, 2014-08-18, 18:39
[HDFS-6560] Byte array native checksumming on DN side
, 2014-07-11, 22:56
[HDFS-6461] Use Time#monotonicNow to compute duration in DataNode#shutDown
...The system time can move around for various reasons, so we convert to monotonicNow to ensure greater accuracy when computing a duration in this method....
, 2014-05-30, 16:18
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